Hair dryer



FIG. 1 is a perspective view of a hair dryer showing our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a back end elevational view thereof; and

FIG. 6 is a front end elevational view thereof.

The ornamental design for a hair dryer, as shown and described.